Header image rollover

Hello,

I have already made my header image a link with the instructions on the kubrick theme website. Now I’d like to make the header image a rollover. My website is here: http://lukas.g-e-tech.com . The image i want to the header image to be when the mouse is over it is here: http://www.lukas.g-e-tech.com/wp-content/themes/default/images/kubrickheader2.jpg

Thanks for your time,

Lukas